Record Display for the EPA National Library Catalog


Main Title Comparative evaluation of mesophilic and thermophilic anaerobic digestion: Phase one /
Author Kugelman, Irwin J. ; Guida, V. G.
Other Authors
Author Title of a Work
Guida, Vincent G.
CORP Author Lehigh Univ., Bethlehem, PA.;Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab.
Publisher U.S. Environmental Protection Agency, Risk Reduction Engineering Laboratory,
Year Published 1989
Report Number EPA/600/2-89/001A
Stock Number PB89-151393
OCLC Number 48446753
Subjects Sewage sludge digestion ; Autoclaves--Experiments ; Thermal analysis
Additional Subjects Sludge digestion ; Sewage treatment ; Biodeterioration ; Temperature ; Anaerobic conditions ; Thermophiles ; Methane ; Decomposition reactions ; Thermodynamic properties ; Chemical analysis ; Steady state ; Municipalities ; Tables(Data) ; Waste disposal
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
ESAD  EPA 600-2-89-001a Region 10 Library/Seattle,WA 08/09/2017
NTIS  PB89-151393 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 75 pages : illustrations ; 28 cm
A study of the operation of anaerobic systems under temperature transition was conducted as part of a larger study of mesophilic vs. thermophilic anaerobic digestion. Systems seeded with domestic sewage sludge, but subsequently fed a chemically defined complex medium, were operated at 20- and 30-day detention times at 35 C. The temperature was raised to 55 C at rates varying from 0.25 C to 2.5 C per day. As soon as the temperature exceeded 45 C methane production shut down; the units were held at 45 C until recovery occurred. Once recovery of methane production ability occurred, transition to 55 C took place with little incident. The rate of temperature rise had little effect on the total time required to obtain stable operation at 55 C; detention time had a minor effect with longer detention time yielding superior results. Studies of temperature drop and steady-state comparison between mesophilic and thermophilic operation also were conducted.
Caption title. "Jan. 1989." "EPA/600/2-89/001A." Microfiche.